Hydraulic Sealing Plugs
The Worlds Leading Sealing System
The KOENIG – Expander Plug is a unique system to seal holes with absolute integrity in various types of hydraulic and pneumatic components such as controls, valves, regulators, relays, cylinders, motors, presses, pumps, etc, which have one thing in common. That is that hydraulic fluid or gaseous medium under pressure flow through channels in the device. Many times these channels must be drilled from outside to connect internal passages. These drilled holes must then be sealed pressure tight to operate the device and prevent leaks. A number of other sealing methods can be used but can often be more costly and less reliable.
The KOENIG – Expander Plug provides a safe, quick, leak-proof, and low cost method for sealing cross-drilled holes. It ensures peak performance with a comfortable safety margin even in extreme applications. They are available in five styles and in different materials.
Most commonly used in Construction, Aerospace. Automotive and Agriculture Engineering, and composites.
Sealing plug types and characteristics
|Koenig Sidex SK||The Sidex SK plug works on the pull/expand principle. The plug consists of an expandable sleeve around a mandrel type expanding element. By applying an axial force to the mandrel while restraining the sleeve with a special tool, the sleeve is forced to radially expand, and the serrations on the outside of the sleeve anchor into the base material of the bore wall. Upon reaching a predetermined force, the mandrel breaks off and the plug is set.|
|Koenig MB Series||The concept of the MB Series is that of a pressure/expand principle. Each plug consists of a ball, as the expanding element, and a cup-shaped expansion sleeve. Forcing the ball into the sleeve causes the sleeve to expand outward. The serrations on the outside of the sleeve dig into the base material to provide a secure anchorage. The ball is set when it is flush with or slightly below the top of the sleeve. The top of the sleeve constricts slightly and prevents the ball from coming out.|
|Koenig LK Series||The LK Series works on the pull/expand principle. The plug consists of an expandable sleeve around a mandrel type expanding element. By applying an axial force to the mandrel, while restraining the sleeve with a special tool, the sleeve is forced to radially expand and the serration on the outside of the sleeve anchors in the bore of the base material due to the roughness of the hole. Upon reaching a predetermined force,the mandrel brakes off and the plug is set.|
|Koenig LP Series||Press fit and anchorage concept of the LP Series are achieved by a surface hardened but still flexible cup and cone shaped insertion sleeve. During the setting process, the flexible sleeve moulds into the hole configuration and the labyrinth serration on the outside of the sleeve anchors in the bore wall due to the roughness of the hole. The insertion sleeve is forced by its self locking cone shape, to radially brace and anchor in the material.|